Question

Given f(x)= x-5over 3, solve for f^-1(3).

Answer 1

Help please!!!

Answer 2

Anyone? @mathmath333

Answer 3

is it this \(\large\tt \begin{align} \color{black}{f(x)= x-\dfrac{5}{3}}\end{align}\)

Answer 4

\[\frac{ x-5 }{ 3 }\]

Answer 5

possible answers ate -1, 14, 18 and 21

Answer 6

@mathmath333

Answer 7

\(\large\tt \begin{align} \color{black}{f(x)= \dfrac{x-5}{3}\\~\\
\text{put f(x)=y}\\~~\\
y= \dfrac{x-5}{3}\\~\\
3y= x-5\\~\\
3y+5= x\\~\\
x=3y+5\\~\\
\text{sway x and y}\\~\\
y=3x+5\\~\\
\text{put} ~~f^{-1}(x)=y\\~~\\
f^{-1}(x)=3x+5\\~\\
f^{-1}(3)=3\times 3+5\\~\\
f^{-1}(3)=14\\~\\}\end{align}\)

Answer 8

Thank you!